vessels, calledlymphatic ductswhich empty into veins in the neck. Thethoracic duct
collects from the left side of the body and the lower right side of the body and empties into
the left subclavian vein. The right thoracic duct collects from the right arm, thorax, neck and
head, and drains into the right subclavian vein.
Most of the disease-fighting function of the adult mammal is carried out by thelymph nodes
which occur along the lymph ducts. Lymph nodes are small, irregularly-shaped masses
through which lymph vessels flow. Clusters of nodes occur in the armpits, groin, and neck.
Cells of the immune system line channels through the nodes and attack bacteria and viruses
travelling in the lymph, so they basically act as tiny filters.
Figure 8.18: Interaction between lymphatic and cardiovascular circulatory systems.Functions of lymphatic system DUMMY
The main functions of the lymphatic system are as follows:
- The main function of the lymphatic system is tocollect and transport tissue fluids
from the intercellular spaces in all the tissues of the body, back to the veins in the
blood system.
Chapter 8. Transport systems in animals 241